– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 4 pm Fri 16 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Fri 16 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 9mm), mostly falling on Fri night. Warm (max 22°C on Fri afternoon, min 6°C on Sat night). Wind will be generally light. | Days 5–7 Weather SummaryMostly dry. Very mild (max 14°C on Wed afternoon, min 6°C on Mon night). Wind will be generally light. | ||||||||||||||||
Fri 16 | Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | |  | |  |  | |  | | | | | | | | |
clear | rain shwrs | rain shwrs | rain shwrs | clear | clear | some clouds | some clouds | some clouds | cloudy | some clouds | clear | clear | clear | some clouds | clear | some clouds | |
Cloud base (m) | 8400 | 1750 | 3700 | 1550 | 1700 | 6850 | 4700 | 4200 | 2200 | 3350 | 8100 | 2900 | |||||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | 5 | 4 | 0.1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 22 | 17 | 10 | 10 | 7 | 10 | 12 | 9 | 9 | 11 | 7 | 9 | 12 | 8 | 12 | 14 | 10 |
min °C | 20 | 10 | 9 | 10 | 6 | 6 | 10 | 8 | 8 | 9 | 6 | 6 | 11 | 8 | 8 | 13 | 9 |
chill °C | 20 | 9 | 8 | 9 | 6 | 6 | 10 | 8 | 8 | 9 | 6 | 5 | 11 | 8 | 8 | 13 | 9 |
Freezing level m | 3650 | 3000 | 1750 | 1850 | 1800 | 2150 | 2450 | 2400 | 1950 | 1850 | 1700 | 1800 | 2150 | 2650 | 2850 | 2750 | 2400 |
 | — | — | 7:30 | — | — | 7:31 | — | — | 7:33 | — | — | 7:35 | — | — | 7:35 | — | — |
 | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:10 | — | — | 6:08 | — | — | 6:07 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 9mm), mostly falling on Fri night. Warm (max 22°C on Fri afternoon, min 6°C on Sat night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 14°C on Wed afternoon, min 6°C on Mon night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.